Recent content by Jordi

This email is to give a serious warning to all users that are planning to buy SAJ inverters. https://www.saj-electric.com/ I recently acquired a SAJ inverter (SAJ R5 SERIES 5000W 2 MPPT) despite all the bad app reviews. https://www.saj-electric.com/solarenergy-detail/64 While it seems to...

One example: https://www.myevios.com/products/evios-one

I have one and can tell you from experience. Lowest reading and start of charging is 11W. Any value below will just trigger the MPPT consumption without charging and drain the unit.

In my case I got 73W out of the 80W advertised. If I used the maximum input voltage the unit can take and output the maximum voltage the unit can offer, I'd get much closer to those 80W. So indeed, If you want 500W, get a buck for 600-800W. Then the overheating will be more balanced and you'll...

Then what about a DC-DC buck boost converter with current limiter? I have one and it can transform a DC voltage into a lower or higher voltage while providing a current from 0 to 5A with 0,001 accuracy. Problem is that mine is only for 80W, but there should be for 500W. Example...

You may use a step-down module. In Aliexpress there many. Step-down module is a very easy way to supply a current at a voltage no higher than the supplied. The nominal power of the module will limit the current or you may purchase one with current regulation for some extra dollars...

Greetings solarists, After 3 years of experiments with small setups, I finally have the chance to arrange my first resindential solar installation. For greater odds of success, I would like to introduce you to my initial proposal to collect some of your thoughts. Consumptions: 4.650 kWh/year...

Yes I do. Standby consumption is 1,5W. Efficiency of conversion 80-85%. I could not measure it accurately, but around 82% If I remmeber well. MPPT mode with a solar panel works like a charm. Battery mode is disappointing; the regulation with the spinning wheel is not very fine (eg. jumps from...

Here you can follow a post based on the same article. https://diysolarforum.com/threads/sorry-will-not-be-worse-than-plastics.63833/ I see this matter also as a disaster; specially because we humans react on problems rather than prevent them. Even sectors we think have been properly ruled out...

Observed the same warning for a 100Ah 12V Renogy battery. I found also this online: There is no theoretical limit to the number of batteries that can be connected in parallel. As more batteries are paralleled together, the risk of one faulty battery affecting the entire battery bank increases...

As kind of mentioned above; this looks like a propeller for a centrifugal blower. In the factory I work these are used at rotation speeds of >2.000rpm while eolic turbines operate at around 20rpm. Your propeller can probably rotate faster than a giant eolic turbine but even If you get it up to...

There are many different setups I would recommend you depending on many different factors. Until now; I am in the same situation you are with 2 changes, what I rent is an apartment (balcony) and it is in The Netherlands (NL). So for me the determinant values are: Regulation and Consumption...

Hedges, that is the same thought I had a while ago but I changed it over time based on comments of scientists I decided to trust. Besides having material limitations due to imperfect recycling methods: Best recycling technologies recover 99% but totally omit indium, gallium, selenium, cadmium...

My opinion on all this is very pessimistic although I am happily surprised to see that silver is theoretically being recovered already. Great, because a panel it is said to have up to 3% of silver in weight. Why pessimistic? 1) At this moment, limited financial incentive for recycling the...

Just saw one of the recent releases from Ecoflow called Powerstream. It is like an hybrid microinverter with an elegant data visualization (wattages coming in and out) that allows a certain degree of power management, like how much you inject to your home or the grid (in case of surplus), or...